src/FOL/ex/Nat.thy
3 months ago ago misc tuning and modernization;
5 months ago ago isabelle update_inner_syntax_cartouches;
5 months ago ago isabelle update -u mixfix_cartouches;
2015-10-19 ago more symbols;
2015-07-23 ago isabelle update_cartouches;
2014-11-02 ago modernized header uniformly as section;
2014-02-10 ago prefer vacuous definitional type classes over axiomatic ones;
2011-02-18 ago modernized specifications;
2010-12-20 ago proper identifiers for consts and types;
2009-07-09 ago removed obsolete CVS Ids;
2008-01-27 ago tuned;
2006-06-07 ago removed obsolete ML files;
2005-09-03 ago converted to Isar theory format;
1997-05-06 ago tuned comments;
1996-02-05 ago expanded tabs
1995-11-07 ago removed quotes from types in consts section
1994-05-03 ago removal of obsolete type-declaration syntax
1993-09-16 ago Initial revision